Solar connector QOLTEC MC4 1000V 20A, model 52597

QOLTEC MC4 1000V 20A solar connector (model 52597) is a single-pole photovoltaic connector engineered for safe DC interconnections in PV systems. Designed to mate with standard MC4-type components, it provides a weather-resistant housing and secure locking mechanism for reliable performance in residential and small commercial solar installations. The connector supports voltages up to 1000 V and continuous current up to 20 A, facilitating straightforward panel-to-panel, panel-to-junction box or panel-to-inverter wiring where MC4 compatibility is required.

Advantages

The QOLTEC MC4 connector offers a compact, UV-stabilized enclosure and an IP-rated sealing system that protects contacts from moisture and dust. Its snap-lock design ensures stable mechanical retention and quick assembly without specialized tools, while the contact materials provide low electrical resistance for efficient power transfer. The connector’s compatibility with common MC4 systems simplifies integration with existing PV components and reduces installation time.

Suitable for

• Connecting photovoltaic modules in residential rooftop arrays
• Wiring small commercial and off-grid solar systems
• Extension and repair of existing MC4-compatible PV cabling
• Interfacing panels with junction boxes, combiner boxes, and inverters

Key specifications

• Poles: single-pole (positive or negative contact)
• Maximum voltage rating: 1000 V DC
• Continuous current rating: 20 A
• Environmental protection: UV-stabilized housing and weather-resistant seal
• Connection type: plug-and-socket MC4 compatible with snap-lock mechanism
• Cable compatibility: typical PV cable cross-sections for 20 A operation (refer to local wiring standards for exact conductor size)

How to use

Strip the photovoltaic cable to the recommended conductor length, insert the conductor into the contact insert and crimp or tighten according to the connector’s assembly method. Ensure the contact is fully seated inside the housing before locking the snap mechanism. Mate the male and female halves until an audible click confirms engagement, and verify polarity before energizing the circuit. Follow local electrical codes and safety procedures when working with DC PV circuits and isolate circuits before making or breaking connections.

Usage recommendations

Use the connector within its rated voltage and current limits and inspect seals and contacts periodically for signs of corrosion or mechanical wear. For runs subject to high currents or long cable lengths, consult wiring tables to select appropriate conductor sizes and minimize voltage drop. When installing outdoors, route and secure cables to avoid strain on the connector housing.